5.9 to LA727

will it bolt up and work? what flex plate and TQ converter do I use? for street driving only!

Yes! You're in luck.

http://www.magnumswap.com/automatic-transmission-details/

I have to measure first...but I suspect I may have a 727 flex plate from my 5.9 Magnum that I can't use (I'm running a 904). If so, it will be for sale...